26 to 50 of 55 Performance Tuning Jobs in London

part of a small and highly effective IT team, no two days are the same. You may be investigating complex database issues, optimising SQL performance or developing new functionality one day, and supporting users with application access, system issues or technical queries the next. This variety offers a unique … user support when required. Support user account administration, system access and day-to-day technical queries. Design and implement database improvements to increase performance, efficiency and reliability. Troubleshoot hardware, software and networking issues. Work closely with stakeholders across the business to gather requirements and deliver effective technical solutions. Assist ...

optimise semantic models (data models) in Power BI Collaborate with data engineering teams working across Fabric, Azure, and Databricks Ensure best practices across performance, governance, and usability Engage with stakeholders to gather requirements and deliver actionable insights Required Skills & Experience Proven experience delivering BI migrations (ideally QlikSense to Power … Strong expertise in Power BI (reporting, DAX, data modelling, performance tuning) Experience building and managing semantic/data models Strong experience working with Azure, Databricks and Fabric Strong stakeholder engagement and communication skills Experience in the financial sector is advantageous If this is a role that suits your ...

space is continuing to invest heavily in its data platform as demand scales. Data sits at the centre of how this business drives commercial performance, insight and strategic decision-making, they're building out a modern, cloud-native data architecture to support that growth. This is an excellent opportunity … doing Designing and evolving scalable, resilient data platforms and pipelines Owning technical decisions and contributing to long-term platform strategy Improving performance, security, governance and cost efficiency across the data estate Acting as a technical leader within the team, mentoring engineers and raising standards Driving adoption of modern patterns ...

join their London-based team. The Role This position sits within the Applications Operations team and plays a key role in ensuring the stability, performance, and security of enterprise application environments. You'll be responsible for the day-to-day support, maintenance, and optimisation of business-critical systems, while … Responsibilities Perform system maintenance, patching, and upgrades in line with change management processes Manage user access (provisioning, de-provisioning, and access reviews) Monitor system performance and proactively address issues Respond to incidents and service requests, ensuring SLA adherence Troubleshoot and resolve application issues, conducting root cause analysis Support system ...

Only) This is a high-impact opportunity to shape the future of a modern data platform at scale. You will take ownership of architecture, performance, and governance across a Databricks Lakehouse environment, directly influencing how business decisions are made. THE COMPANY They are a global, data-driven organisation operating … Migrate complex legacy SQL into clean, modular, and maintainable pipelines. Build scalable transformation frameworks using Spark and Python or SQL-based pipelines. Optimise query performance across large datasets, improving efficiency and cost control. Define and manage data modelling standards, including dimensional modelling approaches. Develop CI and CD pipelines ...

production environments. Utilize extensive knowledge of HCM technical tools, including HCM Data Loader (HDL), HCM Extract, BI reporting, Fast Formulas, custom forms, and performance tuning. Lead customer discussions regarding integrations, data migrations, and reports related to Core HR, Payroll, and other relevant modules. Guide development teams on customization … Oracle SOA Suite, Integration Cloud (OIC), and API development. Knowledge of HCM technical tools including HDL, HCM Extract, BI reporting, Fast Formulae, custom forms, performance tuning, Oracle PL/SQL, OAF. Ability to communicate complex technology solutions to technical, business and management teams. Knowledge and support of existing ...

production at scale, including observability, reliability, incident management, and continuous improvement. Proficiency in Python software engineering, including production-grade, modular OOP design, testing, performance tuning, and debugging. Familiarity with MLOps and distributed systems, including training and serving patterns, batch and real-time architectures, feature stores, orchestration, and scalable … PyTorch, TensorFlow, Scikit-Learn, NumPy, Pandas, SciPy, statsmodels). Experience deploying to AWS (e.g., SageMaker, Bedrock) and operating production workloads with attention to cost, performance, security, and scaling. Experience integrating human-in-the-loop or user feedback signals into iterative improvement processes. If you’re ready to make ...

production at scale, including observability, reliability, incident management, and continuous improvement. Proficiency in Python software engineering, including production-grade, modular OOP design, testing, performance tuning, and debugging. Familiarity with MLOps and distributed systems, including training and serving patterns, batch and real-time architectures, feature stores, orchestration, and scalable … PyTorch, TensorFlow, Scikit-Learn, NumPy, Pandas, SciPy, statsmodels). Experience deploying to AWS (e.g., SageMaker, Bedrock) and operating production workloads with attention to cost, performance, security, and scaling. Experience integrating human-in-the-loop or user feedback signals into iterative improvement processes. Equal Employment Opportunity We are an equal ...

optimize Tagetik Excel reports , including: Matrix Reports SQL Query Reports Write, optimize, and troubleshoot SQL code , including: Stored procedures Data transformation logic Query performance improvements Support ongoing system enhancements and production issues Collaborate with internal stakeholders to deliver robust financial and reporting solutions Required Experience Minimum 2+ years … based) Solid working knowledge of SQL , including coding and troubleshooting Proven hands-on development experience (priority focus) Desirable Skills Additional depth in SQL performance tuning and advanced query design Experience working in Insurance or Financial Services sectors (advantageous but not essential ...

optimize Tagetik Excel reports , including: Matrix Reports SQL Query Reports Write, optimize, and troubleshoot SQL code , including: Stored procedures Data transformation logic Query performance improvements Support ongoing system enhancements and production issues Collaborate with internal stakeholders to deliver robust financial and reporting solutions Required Experience Minimum 2+ years … based) Solid working knowledge of SQL , including coding and troubleshooting Proven hands-on development experience (priority focus) Desirable Skills Additional depth in SQL performance tuning and advanced query design Experience working in Insurance or Financial Services sectors (advantageous but not essential ...

business-critical Snowflake platform, ensuring it remains secure, scalable, high-performing, and well-governed across the organisation.Key Responsibilities Own Snowflake platform administration, performance, and cost optimisation. Manage RBAC, access controls, SSO integrations, and security policies. Implement data masking, row-level security, audit logging, and network controls. Deliver platform upgrades … architecture. Essential Skills Strong enterprise Snowflake administration experience. Cortex AI Expertise in Snowflake security, RBAC, governance, and access management. Experience with warehouse management, performance tuning, and cost optimisation. Strong SQL skills and knowledge of Account Usage and Information Schema. Terraform (or similar Infrastructure-as-Code tooling). Cloud ...

SharePoint (on-prem and cloud), IIS/web platforms, Azure services, and identity services including SSO and MFA Proactively monitor, maintain, and optimise platform performance, availability, capacity, and disaster recovery Lead complex troubleshooting, root cause analysis, and incident resolution Deliver platform upgrades, deployments, and infrastructure changes in line with …/web infrastructure, reporting platforms, and identity management (SSO/MFA) Experience operating at third-line level within complex, global environments Strong understanding of performance tuning, monitoring, capacity planning, and disaster recovery Experience delivering upgrades and deployments within structured change control environments Ability to lead technically, mentor others ...

CSS3) Experience integrating SharePoint solutions using REST APIs, Microsoft Graph, C#, and .NET Hands-on management of on-prem SharePoint environments, including patching, upgrades, performance tuning, and troubleshooting Experience with Business Connectivity Services (BCS), External Content Types (ECTs), and SQL Server design and optimisation ...

love to hear from you. Key Skills 4+ years' experience with Ruby on Rails Strong understanding of OOP & Rails architecture Extensive experience with PostgreSQL (performance tuning, complex queries) Background job processing with Sidekiq & Redis Expertise in RESTful APIs , JSON, JWT, SSO Experience with AWS & Docker Production system support ...

technical authority and client interface, translating regulatory or business problems into scalable Quantexa architectures Leads teams in shaping data models, ER logic, and performance tuning across high-volume, enterprise datasets Mentors teams while influencing delivery standards, design patterns, and best practice across multiple workstreams In order to secure ...

aligned with platform best practices. Platform Administration Support the administration, maintenance, and optimisation of the ServiceNow platform. Manage platform upgrades, patches, releases, and performance tuning activities. Maintain platform security, data integrity, and operational stability. Troubleshoot and resolve technical issues across the platform and associated integrations. Stakeholder Engagement Collaborate … guidance and recommendations on ServiceNow capabilities and best practices. Support user acceptance testing, training, and knowledge transfer activities where required. Continuous Improvement Monitor platform performance and identify opportunities for optimisation and automation. Stay current with ServiceNow product developments, new features, and industry best practices. Contribute to platform roadmaps, enhancement ...

architecture (Connection Servers, UAG, Pods, Pools, Images) Experience managing enterprise VDI environments (run & operations) Good knowledge of vSphere (vCenter, ESXi) Proven experience in VDI performance tuning & troubleshooting (end-to-end) Strong Windows Server knowledge (AD, GPO, DNS, authentication) Experience supporting Windows/Linux VDI desktops Strong problem-solving ...

+ PensionThis role can be done COMPLETELY REMOTELY from the UKWe are looking for: Experienced Java Back-End Software Engineers Multi-threading (GC, Memory, Performance Tuning) ideally in a trading environment Some experience with Service Modernisation, working in a modern API First and Cloud Native Experience, any experience ...

This role can be done COMPLETELY REMOTELY from the UK We are looking for: Experienced Java Back-End Software Engineers Multi-threading (GC, Memory, Performance Tuning) ideally in a trading environment Some experience with Service Modernisation, working in a modern API First and Cloud Native Experience, any experience ...

Nice-to-Haves: If you have a background in data engineering (think Scala, Beam, or Scio ), know your way around Protocol Buffers , or love performance tuning under heavy load, you'll stand out from the crowd. Above all, we want someone pragmatic, collaborative, and genuinely excited about shipping ...

4HANA transformation programme within a complex enterprise environment. In this role, you will be responsible for managing and optimising SAP technical landscapes, ensuring system performance, stability, security, and availability across SAP S/4HANA and ECC environments while supporting ongoing brownfield transformation initiatives. Key Responsibilities Administer and support … system monitoring Support S/4HANA brownfield conversions and landscape transformation activities Manage transports, integrations, security, and technical operations Monitor and optimise SAP HANA performance, availability, and system health Support incident management, root cause analysis, and production support Work closely with functional, infrastructure, cloud, and network teams to ensure ...

patching, and upgrades in coordination with change management procedures Manage user access controls, including provisioning, de-provisioning, and access reviews Monitor system health and performance; initiate health checks and proactively remediate issues Respond to and resolve incidents and service requests in line with SLAs Provide break/fix troubleshooting … tools Understanding of access management, patch management, and vulnerability remediation processes Familiarity with ITIL practices (Incident, Problem, Change, and Configuration Management) Exposure to application performance tuning, cloud platforms, or scripting (e.g., PowerShell, Python ...

implement low-latency messaging patterns (pub/sub, guaranteed messaging, request/reply) Configure and optimise brokers, VPNs, queues, and topic hierarchies Drive performance tuning for ultra-low latency trading systems Integrate trading applications with messaging architecture Monitor and troubleshoot real-time message flows and latency issues Support ...

decision-maker for your teams, and champion a culture of innovation and effective Job Responsibilities Oversee the design, development, and performance tuning of ultra-low-latency C++ trading systems supporting equity derivatives market making (options/warrants) Set the technology roadmap for trading systems expansion and lead strategic … failover Ability to shape technical direction across global, matrixed organizations and build consensus among senior stakeholders Deep understanding of low‐latency optimization techniques and performance engineering Hands‐on experience with exchange connectivity, including FIX protocol, binary exchange protocols, TCP/UDP socket programming, and multicast market data Proficiency with ...

tasks. Key Responsibilities of the Infrastructure Engineer: Server provisioning, administration, and support. OS patching, vulnerability remediation, and antivirus management. Monitoring alerts, incident resolution, and performance tuning. VMware administration and storage capacity management. Backup monitoring, restore testing, and disaster recovery support. User access management and certificate administration. Change implementation ...